webpack.config.mjs

// webpack.config.js
import path from 'path'
import { fileURLToPath } from 'url';
import { dirname } from 'path';

const __dirname = dirname(fileURLToPath(import.meta.url));

export default [
  {
    entry: './src/index.ts',
    module: {
      rules: [
        {
          test: /\.ts$/,
          use: 'ts-loader',
          exclude: /node_modules/,
        },
      ],
    },
    resolve: {
      extensions: ['.ts', '.js'],
    },
    output: {
      filename: 'index.js',
      path: path.resolve(__dirname, 'dist', 'cjs'),
      libraryTarget: 'commonjs2',
    },
    target: 'node',
  },
  {
    entry: './src/index.ts',
    module: {
      rules: [
        {
          test: /\.ts$/,
          use: 'ts-loader',
          exclude: /node_modules/,
        },
      ],
    },
    resolve: {
      extensions: ['.ts', '.js'],
    },
    output: {
      filename: 'index.js',
      path: path.resolve(__dirname, 'dist', 'umd'),
      libraryTarget: 'umd',
    },
    target: 'web',  // or 'browserslist'
  },
];